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Finding the Fourth Proportional to 316,003.70, 436,085.07 and 172,763.70

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Solution

The fourth proportional to 316,003.70, 436,085.07 and 172,763.70 is: 238,413.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,003.70 : 436,085.07 = 172,763.70 : x
  2. Step 2: Convert to fraction form
    316,003.70/436,085.07 = 172,763.70/x
  3. Step 3: Cross multiply
    316,003.70x = 436,085.07 × 172,763.70
  4. Step 4: Simplify right side
    316,003.70x = 75,339,670,207.96
  5. Step 5: Solve for x
    x = 75,339,670,207.96/316,003.70
  6. Step 6: Final answer
    x = 238,413.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.